from pm9-d17.weir.net [206.229.220.217]
*** ATTENTION ***
Your e-mail is being returned to you because there was a problem with its
delivery. The address which was undeliverable is listed in the section
labeled: "----- The following addresses had permanent fatal errors -----".
The reason your mail is being returned to you is listed in the section
labeled: "----- Transcript of Session Follows -----".
The line beginning with "<<<" describes the specific reason your e-mail could
not be delivered. The next line contains a second error message which is a
general translation for other e-mail servers.
Please direct further questions regarding this message to your e-mail
administrator.
--AOL Postmaster
----- The following addresses had permanent fatal errors -----
<mwelch8442@aol.com>
----- Transcript of session follows -----
.... while talking to air-yi01.mail.aol.com.:
RCPT To:<mwelch8442@aol.com
550 MAILBOX NOT FOUND
550 <mwelch8442@aol.com>... User unknown